Tess, a hospital administrator, has her skincare regimen down pat, but wanted to refresh her makeup to keep her look current. Fortunately, celebrity makeup artist Sonia Kashuk had the answer: "If you put on a lipstick with yellow or orange undertones, you're accentuating the yellowness." And paler shades that don't create any contrast against your teeth won't help your case either, she adds. For an instant smile makeover, Kashuk suggests swapping out that problem color for a bright hue that has a blue or purple tinge.

For Tess's new look, the Laura Geller Makeup team lined her lips to give them definition, then applied a bright pink gloss to help bring out the whiteness of her teeth, making her beautiful smile the focal point. Ready to try a new lipstick hue? Before you hit the makeup aisle, take note of these helpful tips:

If you usually wear an orange-y coral, try a berry pink. It will give a similar radiance and freshness, without the yellow undertones.

If you usually wear a tomato red, try a plum or a richer red with a purple tinge. It will create the same kind of contrast against your other facial features but will bring out whiteness too.

If you usually wear a frosty pink, try a rose or mauve with a hint of blue tones. These colors are equally understated, but also add some brightness that boosts your smile.